Terminal radar service area

In United States aviation, a terminal radar service area (TRSA) is a delimited airspace in which radar and air traffic control services are made available to pilots flying under instrument flight rules or (optionally) visual flight rules for the purposes of maintaining aircraft separation.

TRSAs are most often encountered surrounding busy U.S. airports. In recent years many of them have gradually been replaced by Class C or Class B airspace.

Terminal Radar Service Area was established as part of a program to create Terminal Radar stations at selected airports. Because these were never subject to the rulemaking process of 14 CFR Part 91, they do not actually fit into any of the existing U.S. classifications of airspace and have been classified as non-part 71 airspaces. While operating in these airspaces, a pilot who chooses to participate will receive radar services, but participation is not required for VFR operations.

TRSAs will encompass a primary airport with a class "D" designation and the TRSA will be above other controlled airspace (Typically Class E Airspace) with a typical floor of 700 feet or 1,200 feet AGL (Above Ground Level).

TRSAs are shown on VFR (Visual Flight Rules) sectional charts as a solid black/gray (Depending on the print quality of your chart). See Gulfport, Biloxi (Mississippi) for an example.

List of Terminal Radar Service Areas (TRSAs) in the United States

Airport	Approach Control	City	State
Maxwell Air Force Base	Montgomery Approach	Montgomery	Alabama
Fort Smith Regional Airport	Razorback Approach	Fort Smith	Arkansas
Fairbanks International Airport	Fairbanks Approach	Fairbanks	Alaska
Palm Springs International Airport	SoCal Approach	Palm Springs	California
Augusta Regional Airport	Augusta Approach	Augusta	Georgia
Middle Georgia Regional Airport	Atlanta Approach	Macon	Georgia
Robins Air Force Base	Atlanta Approach	Warner Robins	Georgia
Chicago Rockford International Airport	Rockford Approach	Rockford	Illinois
Lake Charles Regional Airport	Lake Charles Approach	Lake Charles	Louisiana
Monroe Regional Airport	Monroe Approach	Monroe	Louisiana
Kalamazoo/Battle Creek International Airport	Kalamazoo Approach	Kalamazoo	Michigan
Muskegon County Airport	Muskegon Approach	Muskegon	Michigan
MBS International Airport	Saginaw Approach	Saginaw	Michigan
Gulfport–Biloxi International Airport	Gulfport Approach	Gulfport	Mississippi
Great Falls International Airport	Great Falls Approach	Great Falls	Montana
Greater Binghamton Airport	Binghamton Approach	Binghamton	New York
Elmira/Corning Regional Airport	Elmira Approach	Elmira	New York
Griffiss International Airport	Griffiss Approach	Rome	New York
Wilmington International Airport	Wilmington Approach	Wilmington	North Carolina
Hector International Airport	Fargo Approach	Fargo	North Dakota
Youngstown–Warren Regional Airport	Youngstown Approach	Youngstown	Ohio
Altus Air Force Base	Altus Approach	Altus	Oklahoma
Erie International Airport	Erie Approach	Erie	Pennsylvania
Capital City Airport	Harrisburg Approach	Harrisburg	Pennsylvania
Harrisburg International Airport	Harrisburg Approach	Harrisburg	Pennsylvania
Wilkes-Barre/Scranton International Airport	Wilkes-Barre Approach	Wilkes-Barre/Scranton	Pennsylvania
Tri-Cities Regional Airport	Tri-City Approach	Bristol	Tennessee
Jack Brooks Regional Airport	Houston Approach	Beaumont	Texas
East Texas Regional Airport	Longview Approach	Longview	Texas
Tri-State Airport	Huntington Approach	Huntington	West Virginia

References

• Sectional chart example of the Palm Springs, California TRSA
• Federal Aviation Administration > Pilot's Handbook of Aeronautical Knowledge, Chapter 14: Airspace
• Federal Aviation Administration > Aeronautical Information Manual, Paragraph 3-5-6